OPUSAT-II is a CubeSat developed by Osaka Prefecture University and Muroran Institute of Technology. OPUSAT-II was launched from Wallops Flight Facility on 20 February 2021, and will be deployed from the International Space Station. The satellite is nicknamed HIROGARI, for a Japanese word meaning spread, or expand.
The satellite's satellite bus is based on the design of Osaka Prefecture University's previous satellite, OPUSAT, which was launched in 2014. OPUSAT-II has a design life of five and a half months.
OPUSAT-II has two main missions. The first mission is to demonstrate high-speed data transmission in amateur radio band. According to the projects's website, the satellite communication system's design and the results of the experiment will be made public.
The second mission is a deployment of a large folded structure. A deployable plastic plate is stored inside the satellite, based on Miura fold. The folding method that will be tested in this mission takes into account the thickness of the plate, unlike the traditional Miura fold. The satellite will optically measure the deployment using a pair of cameras. The team proposes applying this folding method on space-based solar power in the future.